Heater.



L. B. PIPER.

HEATER.

APPLICATION FILED 00122, 1907.

Patented Mar. 9, 1909.

3 SHEETS-SHEET 1.

1 Iiim w 7 m 0 0% 7 h j a 2 z \Jr 3 2 m L. B. PIPER-f HEATER.

APPLICATION FILED 00T.2, 1907.

Patented Mar. 9, 1909.

3 SHEETS-SHEET 2.

L. B. PIPER.

HEATER.

APPLICATION FILED 00122, 1907.

914,455, Patented Mar. 9, 1909.

3 SHEETS-SHEET 3.

UNITE STAT LOUIS B. PIPER, .OF OHICAGO, ILLINOIS.

WATER.

Specification of Letters Patent.

Patented March 9, 1909.

Application filed Ootober 2, 1907. Serial No. 395,532.

To all whom it may concern.

Be it known that I, LOUIS B. PIPER, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Impr'ovements in Heaters, of which the following is a specification.

My invention relates to heaters and has particular reference to hot water heaters.

More specifically my invention relates to hot water heaters designed to augment the heating capacity of a hot air furnace.

The object of my invention is to rovide a supplementary hot water heater w ich may be readily applied to a hot air furnace to increase its heating capacity and particularly to heat such rooms as are too far removed from the furnace to be adequatel heated by the hot air system, or rooms whic have been added to the building since the installation of the hot air system.

A further object is to provide a heater as -mentioned, which, when in use, will not reduce the heating ca acity of the furnace for heating the rooms a ready supplied with the hot air system.

A further object of my invention is to provide a heater of the character mentioned which ma be arranged within a hot air furnace whic is already installed without changing the construction of the furnace or altering its internal arrangement.

Other objects will appear hereinafter.

With these objects in view my invention consists generally in the heater and the com bination and arrangements of its parts all as will be hereinafter fully described and particularly pointed out in the claim.

My invention will be more readily understood by reference to the accompanying drawings forming 'a part of this specification and in which,

Figure 1 is a vertical section of a square furnace equipped with my novel hot water heater, Fig. 2 is a horizontal section on substantially the line 00-00 of Fig. 1, Fig. 3 is a view, similar to Fig. 1, illustrating a portion of the furnace and the arrangement when a heater of smaller ca acity than that illustrated in Fig. l is use Fig. 4 is a horizontal section, similar to Fig. 2, illustrating the device arranged within a'round furnace, Fi 5 is a fragmentary vertical section on the fine 'y-'y of Fig. 4, Fig. 6 is an elevation of one of the heater sections as designed for a square furnace, and Fig. 7 is a section on the line 2-2: of Fig. 6.

It is frequently the case that a hot air furnace is found inadequate to properly heat some of the rooms of the building in which it is installed, especially such rooms as are remote from the furnace. In such cases a suplementaryheater must be provided. If this e a separate heater, additional labor and expense is re uired to maintain a separate fire.

To avoid this, means have been devised for utilizing the heating plant already installed, by equipping the same with a supplementary hot 'water heater. But so far as am aware all such devices, as have been heretofore placed on the market materially reduce the efficiency of the furnace as a hot air heater. This is mainly due to the fact that such devices interfere more or less with the pro er circulation of the gases, preventing them rom properly heating the dome or drum.

The primary object of my invention is to provide a supplementary hot water heater, to be arranged within a hot air furnace, and of such construction and arrangement that it will not detract from the heating qualities of the furnace as a hot air heater. To this end, I provide a heater to be arranged Within a furnace and arrange the same to absorb and utilize the heat which is usually wasted by being absorbed by the non-heating portions of the furnace or by passing into the fines, without interfering with the proper or usual circulation of the hot air and gases within the dome.

The novel heater forming the subject mat ter of this application is particularly adapted for use in conjunction with hot air furnaces having indirect drafts and I have so illustrated it in the drawings.

Referring to the drawings, 1 indicates the dome or drum of a furnaceprovided with the smoke pipes, 2 and 3 the former of which is used only in starting the fire.

4 indicates the casing, 5 the cold air duct, and 6 the hot air pipes leading from the casing.

Suitably supported within the drum is the ash boX, 7 and the grate, 8, which forms the bottom of a fire pot, 9. These are so arranged as to leave a downtake, 10 between them and the walls of the drum, forming a passageway for the gases to the flue, 3. The walls of the fire pot are usually formed of suitable refractory material such as fire brick, resting upon the flange, 11 of the fire pot. In carr ing out my invention, I provide suitable ollow members adapted to replace the refractory Walls of the fire pot. These form a water jacket about the fire pot and are so constructed as to absorb the heat directly from the mass oflive coals in the fire 0t and from the inner layer of the =-urrent of liot air and gases passing downwardly through the passageway, 10, and are provided with suitable inlet and outlet ipes, the Whole being so arranged as not 1301111361- fere in any manner with the normal circulation of the hot air and gases within the furnace. I I 1 The Water jacket, above referred to, which surrounds the fire pot-is formed of a plurality ofcorrugated members, 12 eachof a size to permit being placed within the furnace through the feeddoor. Usually two membars are suflicient although a greater number may be used if desired. Both walls of the members, 12, are corrugated to present a greater heat absorbing surface to the hot gases and the corrugations on the inner face are sufiiciently deep and narrow to prevent the fuelfrom-filling or clogging the corrugations. In this way the flame and hot gases are ermitted to pass between the mass of live uel-and the inner walls, of the members, 12, heating the water more effectuallythan if the coals are permitted to lie close against the wall- Each memberis provided with a diahragm,i13 and an inlet pipe, 14 and an outet pipe, 15. The inlet and outlet pipes, 14 and 15 arearranged'at one end of each member and the diaphragm, 13extends almost to the. opposite end of the member leaving a assage, 16 for the water to pass from the ower-compartment, 12 to the upper com.- partment, .12 The water enters through the pipe, 14 into the lower com artment, 12,

ofthe member, 12, passes the ength of'said member rises through the passageway, 16 into the upper compartment, 12 returns through the "length of the member, passing out through the pipe, 15., As, the water asses through the member, it isgradually heated and it is evident that the water in the lowercompartment is much cooler than in the upper compartment. .By' thus separat-,

ngqt e comparatively-cool water from the thoroughly heated water, and by, arranging .55 the inlet pipe, 14 to discharge into the coolest portion of the member, I avoidthe unpleasant fhammering which is so, common in some hot Water heaters. The outlet pipe; 15 after leaving the. member, 12, may be passed directly through the walls of the furnace, but

I prefer tohave, it pass onceor twice the depth of thedrum to form a floater, 15. In Fig. 4 the outlet extends but once across the furnace passing through the back walls thereof. In Fig. 2 it is provided with a return bend and passes through the front walls.

As before stated, each member, 12, is provided with a separate inlet and separate outlet pipe but these are united upon the outside of the furnace to common feed and supply p pes, 14 and 15 respectively.

17 indicate collars arranged upon the pipes, 14 and 15 where they pass through the drum and the casing to revent the gases from the fire passing into t e'fresh air casing and to prevent the warm air from escaping from the casin about said pipes. 1

In igs. 1 and 5 I have illustrated a water heater of great capacity wherein thevmem bers, .12 replace the whole of the walls of the 3 fire pot. Such a heater is of sufiicient capacity to supply quite a number of radiators. However, if a fewer number of radiators are to be supplied, the members may be made of less depth, and replace but the upper portion 5 of the fire pot walls, as illustrated in Fig. 3. In other words, .the depth of the member, 12 is governed by the number and size of the radiators to be supplied.

It is obvious that the heater herein described may be readily arranged within any indirect draft hot air furnace with but'little trouble. It is also obvious that it does not interfere with or lessen the heating capacity of; the furnace as a hot airheater. Further the device is a great fuel saver as the greater per cent. of the heat which is absorbed is that which would otherwise be lost or rendered of little value in heating the building, such as that which is absorbed by the walls of the fire pot and a large percentage of that which would normally be lost through thefiue 3." Further, no change is required in the internal construction or the arrangement of. the fur- I nace. All that is required is to remove sufficient of the wall of the fire ,ot to accommodate the members, 12, an connect the pipes, 14 and 15 through the walls of the furnace to the pipes leading to and from the radiators. 1 c

- Having described my invention what I claim as" new and desire to secure by Letters Patent is: p

In a hot air furnace the usual drum and casing in combination with an ash box ,arranged within said drum and {spaced from the walls thereof, there bein afeed opening extending through the wal s ofsaid casing and drum above said ash box, a smokeflue extending centrally from below'said ash box a plurality of hollow corrugated water contaming members resting on. said ash'box and forming afire pot andalso a downtake forthe hot gases between said members and the Walls of said drum, said members togetherextending around said fire pot from one side of said feed opening to the other said downtake likewise extending uninterruptedly around said fire pot, a common feed ipe connected to each of said members and each of said members having an outlet pipe extendname to this specification in the presence of girg substzzlntifiilly hgll izonfialily acflossf sail two subscribing witnesses.

e otan tencet on t ewe so sai (111K131 and said casing and ionnected upon the LOUIS PIPER 5 outside of the casing with a common outlet Witnesses:

pi e, substantially as described. F. E. SHEEHY,

n testimony whereof I have signed my HELEN F. LILLIs 

